A Green Blast Shield in Metroid Prime 2: Echoes.
A Green Door from Super Metroid.
Green Hatches, or Green Doors, are a type of Blast Shield that can be destroyed with only Super Missiles; all other weapons are useless when trying to break the shield. They appear in Metroid Prime 2: Echoes, Metroid: Zero Mission, Super Metroid and Metroid: Samus Returns, though there are materials that possess similar qualities seen in these doors in the rest of the series; an example being Cordite. Metroid: Other M features hatches that require a Super Missile to break open, but these are no longer green in color. In the same game, the Seeker Missiles can also open these hatches, since one of the five Seekers is actually a Super Missile.
In Metroid Prime Hunters, there are different Green Blast Shields that require the Battlehammer to open. In Metroid Fusion, Level 2 security hatches are colored green and can be opened with any weapon. In Metroid Prime 3: Corruption, there are Green Doors that require the Nova Beam to open.
Official data
Super Metroid manual
"A single Super Missile opens Green Doors."
Metroid: Zero Mission manual
"Firing Super Missiles at these hatches will clear the way."
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